Datasheet LM4130 (National Semiconductor)

LM4130
November 1999
Precision LM4130 Precision Micropower Low Dropout Voltage Reference General Description Features
The LM4130 family of precision voltage references performs n Small SOT23-5 package
Micropower
comparable to the best laser-trimmed bipolar references, but n High output voltage accuracy 0.05% in cost effective CMOS technology. Key to this break through n Low Temperature Coefficient 10 ppm/˚C is the use of EEPROM registers for correction of curvature, n Stable with capacitive loads to 100µF tempco, and accuracy on a CMOS bandgap architecture that n Low dropout voltage ≤275 mV @ 10 mA allows package level programming to overcome assembly n Supply Current ≤75 µA shift. The shifts in voltage accuracy and tempco during as- sembly of die into plastic packages limit the accuracy of ref- n Full accuracy −40˚C to 85˚C erences trimmed with laser techniques. n Extended operation to 125˚C
Low
Unlike other LDO references, the LM4130 requires no output n Excellent load and line regulation capacitor. Neither is a buffer amplifier required, even with n Output current 20 mA loads up to 20mA. These advantages and the SOT23 pack- n Output impedance < 1Ω aging are important for cost-critical and space-critical appli- n Voltage options: 2.048V, 2.500V, and 4.096V
Dropout
cations. Series references provide lower power consumption than
Applications Summary
shunt references, since they don’t have to idle the maximum n Portable, battery powered equipment possible load current under no load conditions. This advan- n Instrumentation and process control tage, the low quiescent current (75µA), and the low dropout n Automotive & Industrial voltage(275mV) make the LM4130 ideal for battery-powered
V oltage
solutions. n Test equipment n Data acquisition systems The LM4130 is available in five grades (A, B, C, D and E) for greater flexibility. The best grade devices (A) have an initial n Precision regulators accuracy of 0.05% with guaranteed temperature coefficient n Battery chargers of 10ppm/˚C or less, while the lowest grade parts (E) have n Base stations
Reference
an initial accuracy of 0.5% and a tempco of 30ppm/˚C. n Communications n Medical equipment n Servo systems
Connection Diagram and Pin Configuration
DS101046-2 DS101046-1 Refer to the Ordering Information Table in this Data Sheet for Specific Part Number *Optional, Recommended for improved transient response and input noise reduction.
SOT23-5 Surface Mount Package
(See Application Information) © 1999 National Semiconductor Corporation DS101046 www.national.com